Method of conveying warm liquids.



- H. PERS.

- ME I 0N E NG WARM LIQUIDS.

TION FILED AUG. 23, 1912. 1,060, 1 02. v Patented Apr. 29, 1913.

M M W. vbw

um aha METHOD or CONVEYING WARM LIQUIDS To aZZauhOm it may concern." 38112 known that I, HEINRICH KoPPERs, residing at Moltkestrasse 29,Essen-on-the- Ruhr, in Prussia, Germany, have invented a certain new anduseful Method of Conveying Warm Liquids, of which the following is aspecification.

Thisinvention relates to a=method of conveying tvarm liquids, and ismore especially intended for removing the saline lye from saturationvessels for the manufacture of sulfateof ammonia, by means of a suctionjet consisting of a mixture of steam and air. Heretofore apparatus ofthis description have been worked either with steam alone or solelyvWith compressed air. In the former case there is the disadvantage thatthe steam condenses in the liquid to be raised and consequently dilutesit; this is especially undesirable in the direct production of sulfateof ammonia. The use of compressed air olo-- viates this disadvantage,but makes it neces- 'sary to provide special apparatus for producing thecompressed air.

By using a mixture of hot steam and cooler air the temperature islowered without Withdrawal of heat, that is to say, the temperature atwhich the mixture condenses is lowered. In other words, the air added tothe steam forms a relief gas for the latter, so that according toDaltons law' the steam need only be present in the mixture with apartial pressure. According to the amount of air added, this temperatureis more or less below the normal boilin point of water. By adjusting theconditions so that the condensing temperature is equal to or below thetemperature of the liquid to be raised, condensation of the steam isprevented. The steam is preferably also utilized for the suction of therequired amount of air and for producing the required overvSpecification of Letters Patent. Patented Apr. 29, 1913. Applicationfiled August 2a, 1912. Serial No. 716,598.

a bell shaped enlargement d at its lower end. Pro ecting axially intothe enlargement d isthenozzle e of the conduit 7". Be-

tween the conduit 7" ail the steam "supply'.

conduitg there is a steam nozzle is regulatable by a spindle t, andprojecting into a mixing chamber Z, the latter being connected by anexpansion nozzle m to the conduit When the apparatus is in operation thesteam issuing from the nozzle 70 sucks a certain amount of air throughthe orifice a and the steam and air are intimately mixed, whereby thetemperature and pressure of the steam are lowered, but theair is heatedand its pressure raised.

the temperature of the mixture, or the condensation point of the latter,is at or below the temperature of the liquid to be raised. When themixture of steamand air is introduced'by the nozzle 6 into the bell d,it carries with it liquid from the pit 6, without however diluting thisliquid. The raised liquid and the mixture of compressed air and steamthen pass out through the tube 0.

I claim- '1. The method' of conveying warm liquids, I

especially for lifting saline lye'from saturation vessels for sulfate ofammonia, by means of a suction-jet consisting of a mixture of steam andair, the point of condensation of which mixture is below or at thetemperature of the liquid to be raised.

2. The method of conveying warm liquids, especially for lifting salinelye out of saturation vessels for sulfate of ammonia, by means of asuction jet consisting of a mixture of'steam and air, the point ofcondensation of which mixture is below or at the temperature of theliquid to be raised, the said mixture of steamand air'being produced bythe action of a steam jet sucking air into a mixing chamber andimparting pressure to the air.

3. The method of conveying warm liquids, especially for lifting salinelye out of saturation vessels for sulfate of ammonia,

means of a suction jet consisting of amixveying the liquid to be raisedthrough a ture of steam and air, live steam being inc0nduif troduced bya tube into a mixing chamber 7 having an air inlet, whereby air issucked HEINRICH KOPPERS' I in said chamber and compressed, the mix-Witnesses:

ture of steam and air being introduced by a ALBERT NUFER,

tube into the liquid to be raised, and con- HELEN NUFER.

